Privacy Policy

Your privacy matters. This policy explains how CallerCheck collects, uses, and protects your information.

Last updated: September 2026

Privacy at a Glance

No account required
Use CallerCheck without registering
We don't sell data
Your information is never sold
Anonymous reports
Submit reports without identifying yourself
Minimal data collection
We only collect what's necessary

1 Who We Are

CallerCheck is a UK-based phone number lookup service operated by CallerCheck UK ("we", "us", "our"). We provide a free, community-driven platform that helps people identify unknown callers and protect themselves from phone scams.

For the purposes of UK data protection law, we are the data controller responsible for your personal information when you use our website and services.

2 Information We Collect

Information You Provide

When you use CallerCheck, you may provide:

  • Phone number reports: The phone number you're reporting, whether it's spam or safe, the type of call, and any comments you choose to add.
  • Optional display name: If you choose to add a name to your report (completely optional).
  • Contact form submissions: Your name, email address, and message if you contact us directly.

Information Collected Automatically

When you visit our website, we automatically collect:

  • Device information: Browser type, operating system, and device type.
  • Usage data: Pages visited, time spent on pages, and how you interact with our site.
  • IP address: Your internet protocol address, which may be stored temporarily for security and spam prevention.
  • Referral source: How you arrived at our website (e.g., search engine, direct link).

What We Don't Collect

  • βœ— Your personal phone number
  • βœ— Your exact location or GPS data
  • βœ— Financial or payment information
  • βœ— Social media account details
  • βœ— Passwords or login credentials (we don't have accounts)

The CallerCheck iPhone App

The app needs no account. It works as follows:

  • A random app identifier. When first opened, the app creates a random code and sends it with each request. We use it to limit how often one phone can use the service, so it can't be abused, and it is stored with reports you send from the app so we can tell that phone when a report is approved. It isn't linked to your name, phone number or Apple account.
  • Numbers you look up. Looking a number up adds one to that number's public lookup count, as on the website. We don't keep a history of what you looked up.
  • Reports you send. Your rating, the type of call, what you write and, if you give it, your first name. As with reports on the website, we also keep the IP address and device type they were sent from, to prevent abuse. Every report is checked before it is published.
  • Reports you flag. The reason you choose and the IP address it was sent from, so each person's flag counts once.
  • Caller ID warnings. The app downloads a list of reported scam numbers so your phone can label them when they ring. iOS does not tell us who calls you, and nothing about your calls leaves your phone.
  • Notifications (only if you allow them). If you allow notifications, your phone gives the app a push token from Apple, which we store with the app's random identifier. We use it only to tell you when a report you sent is approved or not, and send the notification through Apple's push service. Turn notifications off in the app's Me tab or in iOS Settings, and delete the app to stop them for good.
  • CallerCheck PRO (only if you subscribe). Apple handles the payment; we never see your card or Apple Account details. So that PRO features work, the app sends us Apple's signed record of your subscription, and we keep its transaction number, which plan it is and when it ends, with the app's random identifier. Numbers you choose to watch are kept with that identifier so we can notify you. Numbers you block are kept on your phone only.
  • Kept on your phone only. "My reports" (the numbers you have reported from the app) and your caller ID settings are stored on your phone and are never sent to us.
  • Messages to support. If you contact us from the app, we receive your name, email address and message (plus your app and iOS version for bug reports), and use them only to reply.
  • Crash and error reports. If the app crashes or hits an error, a diagnostic report (what went wrong, app and iOS version, device model) is sent to our error-monitoring provider, Sentry, so we can fix it. It contains no name, email, phone number or the numbers you look up.
  • Usage statistics (only if you agree). The first time you open the app it asks whether you're happy to share anonymous usage statistics with Google Analytics, for example which screens are used and how often numbers are checked. If you agree, Google receives an app-install identifier and an approximate location derived from your IP address. It never receives the numbers you check, what you write or your name, and it isn't used for advertising. You can switch this off at any time in the app's Me tab.
  • Your clipboard. The app only reads your clipboard when you tap Paste.

The app contains no advertising and doesn't track you across other apps or websites. Guides and pages opened from the app are shown from this website, where our cookie choices apply.

3 How We Use Your Information

We use the information we collect for the following purposes:

Provide our service

Display phone number information, reports, and spam scores to users searching our database.

Prevent abuse

Detect and prevent spam submissions, abuse of our platform, and malicious activity.

Improve our service

Understand how users interact with our site to improve functionality and user experience.

Respond to enquiries

Reply to your questions, feedback, or requests when you contact us.

Legal compliance

Comply with legal obligations and respond to lawful requests from authorities.

Legal Basis for Processing (UK GDPR)

We process your information based on: legitimate interests (providing and improving our service, preventing abuse), consent (for optional cookies), and legal obligation (complying with applicable laws).

4 Cookies & Tracking

We use cookies and similar technologies to provide and improve our service. Cookies are small text files stored on your device.

Types of Cookies We Use

Type Purpose Duration
Essential Required for the website to function (e.g., session management, CSRF protection) Session
Preferences Remember your settings and preferences 1 year
Analytics Understand how visitors use our site (anonymised) 2 years

Managing Cookies

You can control cookies through your browser settings. Disabling essential cookies may affect site functionality. We don't use advertising or third-party tracking cookies.

5 Data Sharing

We take your privacy seriously and limit data sharing to what's necessary:

Public reports

Reports you submit are displayed publicly to help other users. No personal information is attached unless you voluntarily add a display name.

Service providers

We use trusted third parties for hosting, analytics, and security. They process data on our behalf under strict agreements.

Legal requirements

We may disclose information if required by law, court order, or to protect our rights and safety.

We Never

  • βœ— Sell your personal information to third parties
  • βœ— Share data with advertisers or marketers
  • βœ— Provide individual user data to number owners
  • βœ— Transfer data outside the UK/EEA without adequate protection

6 Data Retention

We retain information for as long as necessary to provide our service and comply with legal obligations:

Data Type Retention Period
Phone number reports Indefinitely (forms part of our public database)
IP addresses (for spam prevention) 90 days
Contact form submissions 2 years or until resolved
Analytics data 26 months (anonymised)
Server logs 30 days

7 Your Rights

Under UK data protection law (UK GDPR), you have the following rights:

Right to Access

Request a copy of the personal data we hold about you.

Right to Rectification

Request correction of inaccurate personal data.

Right to Erasure

Request deletion of your personal data in certain circumstances.

Right to Restriction

Request we limit how we use your data.

Right to Portability

Receive your data in a structured, machine-readable format.

Right to Object

Object to processing based on legitimate interests.

To exercise any of these rights, please contact us. We will respond within one month.

Complaints

If you're unhappy with how we've handled your data, you have the right to complain to the Information Commissioner's Office (ICO) at ico.org.uk or by calling 0303 123 1113.

8 Security

We implement appropriate technical and organisational measures to protect your information:

HTTPS Encryption

All data transmitted over secure connections

Secure Hosting

UK/EEA-based servers with security certifications

Regular Updates

Security patches applied promptly

Access Controls

Limited staff access to systems

While we take reasonable precautions, no internet transmission is 100% secure. We cannot guarantee absolute security.

9 Children's Privacy

CallerCheck is not intended for children under 13 years of age. We do not knowingly collect personal information from children. If you believe we have collected information from a child, please contact us immediately and we will take steps to delete it.

10 Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or legal requirements. We will post the updated policy on this page with a new "Last updated" date.

For significant changes, we may provide additional notice such as a banner on our website. We encourage you to review this policy periodically.

11 Contact Us

If you have any questions about this Privacy Policy, your personal data, or wish to exercise your rights, please contact us:

CallerCheck UK

Data Protection Enquiries

Email: Contact Us

We aim to respond to all enquiries within 30 days.

We value your privacy

We use cookies to enhance your browsing experience, analyse site traffic, and show personalised ads. You can choose which cookies to accept below. Read more about cookies on CallerCheck.co.uk

Cookie Settings

Manage your cookie preferences

Essential Cookies

Always Active

Required for the website to function. These cannot be disabled as they are necessary for security and basic functionality.

callercheck_sessionSession management
XSRF-TOKENSecurity (CSRF protection)
cc_consentStores your preferences (6 months)

Analytics Cookies

Help us understand how visitors interact with our website by collecting anonymous information.

Google Analytics
_gaVisitor identification (2 years)
_ga_*Session state (2 years)
_gidUser distinction (24 hours)

Advertising Cookies

Used to show you relevant ads and support our free service. Disabling won't remove ads, but they'll be less relevant.

Google AdSense
Contextual and personalised advertising

Functional Cookies

Enable enhanced functionality like social sharing buttons and embedded content from third parties.

YouTubeEmbedded videos
Google MapsEmbedded maps
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